Invalid JSON response body error when setting up Next.js with multiple Plasmic projects

Developer Support
1

I’m getting an “invalid json response body” error when trying to set up my NextJS codebase with multiple projects in plasmic-init.

My initialize code:

export const PLASMIC = initPlasmicLoader({
  projects: [
    {
      id: process.env.NEXT_PUBLIC_PLASMIC_PROJECT_ID, // ID of a project you are using
      token: process.env.NEXT_PUBLIC_PLASMIC_PROJECT_API_TOKEN, // API token for that project
    },
    {
      id: process.env.NEXT_PUBLIC_PLASMIC_PARTNER_PROJECT_ID, // ID of a project you are using
      token: process.env.NEXT_PUBLIC_PLASMIC_PARTNER_PROJECT_API_TOKEN, // API token for that project
    },
    {
      id: process.env.NEXT_PUBLIC_PLASMIC_CONSUMER_PROJECT_ID, // ID of a project you are using
      token: process.env.NEXT_PUBLIC_PLASMIC_CONSUMER_PROJECT_API_TOKEN, // API token for that project
    },
    {
      id: process.env.NEXT_PUBLIC_PLASMIC_LANDING_PAGE_PROJECT_ID, // ID of a project you are using
      token: process.env.NEXT_PUBLIC_PLASMIC_LANDING_PAGE_PROJECT_API_TOKEN, // API token for that project
    },
  ],
  // Fetches the latest revisions, whether or not they were unpublished!
  // Disable for production to ensure you render only published changes.
  preview: process.env.NEXT_PUBLIC_DEPLOYMENT_ENV !== 'production',
})

Error message with project IDs replaced:

Error: invalid json response body at <https://codegen.plasmic.app/api/v1/loader/code/preview?platform=nextjs&projectId=[PROJECT_ID_1]&projectId=[PROJECT_ID_2]&projectId=[PROJECT_ID_3]&projectId=[PROJECT_ID_4]> reason: Unexpected token < in JSON at position 0

Is there anything I’m doing wrong or should look into for this? Setting the projects array to have only one project works just fine.

2

I dug in and it seems like this is what I’m getting back from Plasmic:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Error</title>
</head>
<body>
<pre>Internal Server Error</pre>
</body>
</html>
3

can you send me the project IDs?

4

DMed you!